Hello,

thanks for the report. Could you maybe point out where the increase happens in the shared memory statistics, e.g. by doing some more calls and executing the stats command again?

If you don’t get a reply in time on the open-source support list, you can also open an issue on our github tracker, to have it documented.

Regarding the mentioned production system issues, if you need defined response times on problems, maybe you might be interested in looking into the companies providing support services in our directory: https://www.kamailio.org/w/business-directory/

Cheers,

Henning

--

Henning Westerholt – https://skalatan.de/blog/

Kamailio services – https://gilawa.com

From: Vanderlei Torres Batistela via sr-users <sr-users@lists.kamailio.org>
Sent: Dienstag, 9. Juli 2024 19:43
To: sr-users@lists.kamailio.org
Cc: Vanderlei Torres Batistela <v.batistela@hotmail.com>
Subject: [SR-Users] Re: Possible Kamailio memmory leak - version 5.8.2

Hello,

Could someone help me please?

I have a production system stopped and waiting to be fixed.

My production script is more complex, but this issue also occurs with simple scripts like the one described previously.

Help on this is much appreciated

Regards,

Vanderlei

---

De: Vanderlei Torres Batistela via sr-users <sr-users@lists.kamailio.org>
Enviado: terça-feira, 2 de julho de 2024 09:24
Para: sr-users@lists.kamailio.org <sr-users@lists.kamailio.org>
Cc: Vanderlei Torres Batistela <v.batistela@hotmail.com>

Assunto: [SR-Users] Possible Kamailio memory leak - version 5.8.2

Hello all,

I am using a very simple scritp with corex module enabled .  Normal calls works fine, but a scenario where INVITE does not

receive response and the call is released with SIP 408 (request timeout) leads to memory leak.  I verified it making a lot of 

calls with this scenario and printing the  shared memory (using kamcmd core.shmmem) .  Its ocurred with modparam("corex", "nio_intercept", 1).

 If  I modify to modparam("corex", "nio_intercept", 0) the memory leak does not ocurr anymore.

The problem also occurs in another scenario where the SIP Cancel message is not responded to.

My script has this event route

# event route

event_route[network:msg] {

    xlog("L_INFO", "Dentro do Event_Route \n");

    if (is_incoming()) {

        xlog("L_INFO", "Received message '$mb' \n");

        $avp(msg) = $mb;

        xinfo("avp(msg) = $avp(msg)");

    } else {

        xlog("L_INFO", "Sending message '$mb' \n");

         $avp(msg) = $mb;

    };

}

Test done wtih 4000 calls:

[root@labcom070 kamailio]# kamctl stats shmem

{

  "jsonrpc":  "2.0",

  "result": [

    "shmem:fragments = 900",

    "shmem:free_size = 6180368",

    "shmem:max_used_size = 66980272",

    "shmem:real_used_size = 60928496",

    "shmem:total_size = 67108864",

    "shmem:used_size = 54884944"

  ],

  "id": 393115

}

[root@labcom070 kamailio]# kamcmd mod.stats all shm

Module: core

{

        create_avp(178): 52257504

        counters_prefork_init(211): 53760

        cfg_clone_str(132): 112

        cfg_shmize(221): 832

        main_loop(1381): 16

        init_pt(104): 16

        init_pt(103): 16

        init_pt(102): 6224

        cfg_register_ctx(47): 96

        init_tcp(5197): 8192

        init_tcp(5191): 32768

        init_tcp(5182): 16

        init_tcp(5175): 16

        init_tcp(5167): 16

        init_tcp(5161): 16

        init_tcp(5149): 16

        init_avps(92): 16

        init_avps(91): 16

        init_dst_blocklist(435): 16384

        init_dst_blocklist(427): 16

        timer_alloc(494): 96

        init_dns_cache(368): 16

        init_dns_cache(359): 16384

        init_dns_cache(351): 16

        init_dns_cache(343): 16

        init_timer(264): 16

        init_timer(263): 16384

        init_timer(262): 16

        init_timer(261): 16

        init_timer(250): 16

        init_timer(218): 16

        init_timer(207): 278544

        init_timer(206): 16

        init_timer(194): 16

        cfg_child_cb_new(832): 64

        sr_cfg_init(371): 16

        sr_cfg_init(364): 16

        sr_cfg_init(356): 16

        sr_cfg_init(344): 16

        sr_cfg_init(332): 16

        ksr_shutdown_phase_init(123): 16

        rpc_hash_add(118): 16

        qm_shm_lock_init(1463): 16

        Total: 52687808

}

 I attached  my kamailio  script used and a log with one call   using the command "kamcmd corex.shm_summary" with modparam("corex", "nio_intercept", 1)
and  modparam("corex", "nio_intercept", 0)

Regards,

Vanderlei